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<p>of these pathways impairs proprioception, as seen in gene knockout models.</p>

<p>It is also believed that muscle spindles play a critical role in <a href="page.php?w=Piaget%27s_theory_of_cognitive_development">sensorimotor</a> <a href="page.php?w=developmental_psychology">development</a>. Additionally, gain-of-function mutations in HRAS (e.g.: G12S) observed in Costello syndrome are associated with increased spindle number, providing insight into genetic regulation of spindle density.</p>

<p><big>Clinical significance</big></p>
<p>Dysfunction in muscle</p><p>
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